Runner brick and process of manufacturing the same



Dee. 30. ,1 924.

W. MALZACHER RUNNER BRICK AND PROCESS OF MANUFACTURING THE SAME Filed Jan. 12. 1923 r mm w T E N a N mu m mm ww A .w w H H a w Patented Dec. 30, 1924.

UNITED STATE QEFIE WALTHER MALZAGHER, 0F TRAISEN, AUSTRIA.

RUNNER BRICK AND PROCESS OF MANUFACTURING THE SAME.

Application filed January 12, 1923. Serial No. 612,362.

To all whom it may concern.

Be it known that I, WALTHER MALZACHER, a citizen of the Republic of Switzerland, and resident of Traisen, Lower Austria, Bepublic of Austria, have invented certain Improvements in Runner Bricks and Processes of Manufacturing the Same, of which the following is a specification.

In casting iron and more particularly steel, a permanent base plate is used on which the mould and stand pipe are mounted; the stand pipe reaches to a level above that of the mounted tops, communication is established between the stand pipe and the moulds by runner bricks provided with suitable passages namely main passages and branch passages, the main passages of each of the runner bricks communicating with the main passages of one or more adjacent runner bricks and the branch passages communicating with the main passages of the bricks and with the moulds tightly fitted onto the same. The runner bricks are located in suitable grooves provided for this purpose in the permanent base plate tightly fitting each other and the grooves.

In casting molten metal is poured into the stand pipe and flows through the main and branch passages of the runner bricks to the several moulds mounted on the base plate- After the metal has set in the moulds and in the passages of the runner bricks, the latter and the moulds have to be removed, and fresh runner bricks have to be brought into position in the base plate preparatory to a fresh casting, while the run-' ner bricks once used must be broken to recover the metal set in their passages.

The runner bricks heretofore used were made of fire brick or chamotte and thus were expensive and moreover they could not be made at the foundry whenever required but had to be ordered from special fire brick works.

In order to dispense with the runner bricks, base plates were proposed in which either the entire base plate or part thereof were'so constructed that the walls of the channels therein can be formed of refractory material which is heated in the requisite parts of the base plate, the requisite passages being produced therein. This, however, involves great expense as new base plates have to be substituted for those heretofore used.

The object of my invention is, while retaining the usual or existing base plates, to substitute for the expensive runner bricks, made of fire brick or chamotte, runner bricks which may be easily made in the foundry from materials there ready at hand, so that any foundry may at once use my improved runner bricks with the exist ing base plates.

With this object in view my improved runner brick consists of a rigid frame preferably of cast steel or steel sheet of the shape of the usualrunner bricks made of fire bricks or chamotte, and filled with some suitable refractory moulding material such as sand, loam or the like in which the required main and branch passages are formed in the usual way by cores.

Preferably sand moistened with sulfite lye in the usual way is used as moulding material, and is pressed into the frames. The end faces and the top face of the frame are open and its bottom may be provided with an opening.

In the annexed drawings Fig. 1 is a perspective view of a constructional form of the rigid frame of my improved runner brick, Fig. 2 is-a transverse section of the latter and Fig. 3 is a plan view of the base plate provided with my improved runner bricks and mould mounted thereon. Fig. 4 is a perspective view of a modificationof the rigid frame of my improved runner block, Fig. 5 is a transverse section thereof and Fig. 6 is a plan view or a runner brick.

Referring more particularly to Figs. '1 and 2 my improved runner brick consists of a rigid frame of an external configuration and dimensions the same as those of the fire brick or chamotte runner bricks heretofore used with any given base plate. The frame shown in Fig. 1 is parallelopipedal in shape and has full side walls 1, 2 and a bottom wall 3 which may be provided with an opening 4; it is open at the top and end faces and the side walls may be provided on top with inwardly projecting flanges 12, 13. This frame is filled with some suitable refractory moulding material 5 such as sand preferably moistened with sulfite lye or with loam or the like, the usual main passages 6 and branch passages 7 by means of cores inserted before filling and. pressing in the moulding material and then removed as is well known in making moulds. The opening lin the bottom face 3 serves for compressing the' moulding material: within the fra'me but: inmany oases suc'h-fcompression is not necessary and then the opening may be dispensed with.

The frame filled with moulding material" jwlth the ma n passages and branch passages provided therein is then preferably slightly heated if desired and is then brought: into the base plate 8 the same as the fire brick or chamotte run-i ieii brioks heretofore in use thewoastingmoulds;

construction of the frame thesame is strengthenedand a more-uniform compression. ofthe 'moulding material is secured? In -'some='cases: the [runner bricks, more partieu larly those immediately below-' the" stand 'pipe which are subject -tothe molten metal rushing downwardthroughthe-stand pipe; it iszvead isabletoprovide below the "braneh passage 7,- leading from the-- stand pipe to the main passage, a fire brick block '9 so; as form the bottom of the main" passagefi -as shown m Fig: In thiscasemt'he botto-m wall 3 is preferablyprovided with inw'a-rdlyfprojeeti ng ribs 10' for 'pre-c ventingi'later-ah 'displacement of the fire" briek blook 9i" s ln order' todispense with the application of lo'an'1 '---or other plastic tightening materi at 't ing reee'ss 14, but as a rule this is not remmense H1 7 runner bricksas suffieientl-y" tightjoints are obtained witl faees-"by' applyingendfaees' as usual; I

The improved runner bricks above deplane end some plastic loam to .the'

" swri-bed' are' placedinto the base plate and aft e'r 'castihg they are removed therefrom in the same w'ay'asthe ohamotte runner bricks heretofore usedx After removal the moulding -materiall: and the metal set' in' the passages inthe sameareremovec l from the frames and the-latteras wellas the moulding; materia over againe V 7 Thus all the foundry requires is a com pai ati vely very small stock of the rigid frames 'made of cast steel or sheet steel; the

V v mouldingzimaterial preferably sand' being ready at hand in the foundry andallthe runner: bricks required may-bereadilyzmade frem these) materials-at the foundry itselfin "e the join'ts ot the runner bricks the same-may be 'Prm' ided-atone 'end face-of tliefil l ihg matei'ial withaiproj eotion I11 and opposite end-face with a-eorrespond l maybe* used over and:

the simplest and cheapest manner, whereby a large saying is secured-, -andwtheifoundry becomes independent of "fire briok works furnishing-the ch'amotte runner bricks heretoiore used. Moreover if any change of the dimension andshape of the runner bricks is i desirable-for anyreasons all that is required is to cast a small number of fresh frames, Whieh maybe done Without any difficulty in the foundry itself. This also permits the Vmaking and using o-t'" frames representing?- a combination Y of a-plurality of ohtmotte runner bricks whereby the number of joints 'may-be redueed when the runner bricks are plaeed in the base-plates; I V I r Any-suitable moulding 1 material- Zm ay be used, such as sand', loam' or' th-lik ac cording to existing conditionsz Normallfyfithe-improved: runner bricks are placed in,

the base' plate with their o'pen topface andf86 the branchpassagesupwards; but whereas- I mOuldsKareto be mounted on the runner bricks-the latter are not providedwith braneh'passages and may also be-placed in 7 i the- 'base 'plate :with: the; bottom" wall up 1 wards.

What-Iclaim-is: 1; A runner bri'cle consisting of a rigid metal frame fil led-witli moulding: material suclrframe being of a sharpea'ndthe 'moulcl i11g-material therein? being providedwith passages the same'as chamotte runner brieks',' the-"frame being open at tl'i'e-iaces' where the saidpassages leadtotheoutsidm r 2: A runner brick consistin ofa rigidmetal frame filled *wi-tlr moulding material; suc 'h -frame'being 0e21 shape and the mould I i.ng material= beingp'rovided "with paswgesi e the same: as c'hamotte runner bricks; the

said frame being open" at le ast-*'- two faceswhererthesaid passages leadto the outside 7 A runner brick consistingof' 'a rigid metal framefilled *with moulding materialsuch frame being=o a shape and themoul'd ingfm'aterial jb'e ing proyidejd with-mainand 110111,

branch passages the same as chamotte run ner bricks; the saidi-frame-being open"at-'* least two faces where'the' said passages lead" to the outside; ar-refractory bloclr'being em bedded iii the filling materialopposite the lls inner endoftlie-branoh passagg such re fraotorybloek' forming the bottom of the main= passage and restingupon the bottom of the frame.

4 5 A runner brick consisting "of 'a rigid 12am:

instal frame filled witl'i mouldi ng material? sueh fra'me being of ajsh'a'pe and the mould:

7 ing material being provided with mainand branch passages; the same 'as cha-motterum- V ner bricks;- the saidframe beingiop'eni lat at i least two faoesi w-here tl ie said passages; lead-' to the outside, a retraetoryblock being em 1 bedded iir tli'e:filling-"material opposite the inner "end 'of the branch passages, su'oh re' fraotory block forming the bottomiof'the139* main passage and resting upon the bottom of the frame, between inwardly projecting ribs on the bottom wall of the said frame.

5. A runner brick consisting of a rigid metal frame filled with moulding material,

such frame being of a shape and the filling material being provided with passages, the same as chamotte runner bricks, the said frame being open on top and at least one of its sides and being provided with an opening in its bottom.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses.

WVALTHER MALZACHER.

Witnesses:

CARL COUDEMKY, ADoLPH FRIEDL. 

